1. Standard of volatile organic compounds in the atmosphere, generally at one year each for the following.
(1) Benzene (Benzene) must not exceed 1.7 micrograms per cubic meter.
(2) vinyl chloride. Old (Vinyl Chloride) must not exceed 10 micrograms per cubic meter.
(3) 1,2 - dichloro ethane (1,2 - Dichloroethane) must not exceed 0.4 micrograms per cubic meter.